EP 4322244 A1 20240214 - NEGATIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC APPARATUS
Title (en)
NEGATIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC APPARATUS
Title (de)
NEGATIVELEKTRODENFOLIE, SEKUNDÄRBATTERIE, BATTERIEMODUL, BATTERIEPACK UND ELEKTRISCHE VORRICHTUNG
Title (fr)
FEUILLE D'ÉLECTRODE NÉGATIVE, BATTERIE SECONDAIRE, MODULE DE BATTERIE, BLOC-BATTERIE ET APPAREIL ÉLECTRIQUE
Publication
Application
Priority
CN 2022101433 W 20220627
Abstract (en)
This application relates to a negative electrode plate, including a negative electrode current collector; and a negative electrode film layer located on at least one surface of the negative electrode current collector. The negative electrode film layer includes a middle coating region and edge coating regions located on two opposite sides of the middle coating region. Thickness of the edge coating region in a fully-discharged state is A1, thickness of the edge coating region in a fully-charged state is B1, thickness of the middle coating region in the fully-discharged state is A2, and thickness of the middle coating region in the fully-charged state is B2. A1, A2, B1, and B2 satisfy the following condition: (B1-A1)/A1>(B2-A2)/A2, and B2<B 1. This application further relates to a secondary battery including the negative electrode plate as well as a battery module, battery pack, and electric apparatus including the secondary battery.
IPC 8 full level
H01M 4/13 (2010.01); H01M 10/0566 (2010.01)
CPC (source: EP US)
H01M 4/0404 (2013.01 - US); H01M 4/13 (2013.01 - EP); H01M 4/133 (2013.01 - EP); H01M 4/134 (2013.01 - EP); H01M 4/36 (2013.01 - EP); H01M 4/362 (2013.01 - EP); H01M 4/386 (2013.01 - EP); H01M 4/587 (2013.01 - EP); H01M 10/052 (2013.01 - EP); H01M 10/0525 (2013.01 - EP); H01M 10/647 (2015.04 - US); H01M 50/209 (2021.01 - US); H01M 50/249 (2021.01 - US); H01M 2004/021 (2013.01 - EP US); H01M 2004/027 (2013.01 - EP US); Y02E 60/10 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4322244 A1 20240214; EP 4322244 A4 20240508; CN 118020163 A 20240510; US 2024186479 A1 20240606; WO 2024000095 A1 20240104
DOCDB simple family (application)
EP 22926311 A 20220627; CN 2022101433 W 20220627; CN 202280063451 A 20220627; US 202418441607 A 20240214